[PATCH v2] drm/vkms: Add YUV410, YUV411, YVU410, and YVU411 support

From: Renjun Wang

Date: Mon Feb 02 2026 - 10:13:38 EST


Add support for the following planar YUV formats:
- DRM_FORMAT_YUV410
- DRM_FORMAT_YUV411
- DRM_FORMAT_YVU410
- DRM_FORMAT_YVU411

These formats are handled by the existing planar_yuv_read_line()
function, which correctly handles the subsampling defined in each
format's drm_format_info.

The YVU variants (YVU410, YVU411) are also added to
get_conversion_matrix_to_argb_u16() to ensure the U and V columns
are swapped correctly in the conversion matrix.

v2:
- update vkms_formats[] to add new formats.

Signed-off-by: Renjun Wang <renjunw0@xxxxxxxxxxx>
---
drivers/gpu/drm/vkms/vkms_formats.c | 6 ++++++
drivers/gpu/drm/vkms/vkms_plane.c | 4 ++++
2 files changed, 10 insertions(+)

diff --git a/drivers/gpu/drm/vkms/vkms_formats.c b/drivers/gpu/drm/vkms/vkms_formats.c
index dfb8e13cba87..5ef5d49a44ef 100644
--- a/drivers/gpu/drm/vkms/vkms_formats.c
+++ b/drivers/gpu/drm/vkms/vkms_formats.c
@@ -730,9 +730,13 @@ pixel_read_line_t get_pixel_read_line_function(u32 format)
case DRM_FORMAT_P012:
case DRM_FORMAT_P016:
return &YUV161616_semiplanar_read_line;
+ case DRM_FORMAT_YUV410:
+ case DRM_FORMAT_YUV411:
case DRM_FORMAT_YUV420:
case DRM_FORMAT_YUV422:
case DRM_FORMAT_YUV444:
+ case DRM_FORMAT_YVU410:
+ case DRM_FORMAT_YVU411:
case DRM_FORMAT_YVU420:
case DRM_FORMAT_YVU422:
case DRM_FORMAT_YVU444:
@@ -921,6 +925,8 @@ void get_conversion_matrix_to_argb_u16(u32 format,
memcpy(matrix, matrix_to_copy, sizeof(*matrix_to_copy));

switch (format) {
+ case DRM_FORMAT_YVU410:
+ case DRM_FORMAT_YVU411:
case DRM_FORMAT_YVU420:
case DRM_FORMAT_YVU422:
case DRM_FORMAT_YVU444:
diff --git a/drivers/gpu/drm/vkms/vkms_plane.c b/drivers/gpu/drm/vkms/vkms_plane.c
index 19fe6acad306..44773a82fbfd 100644
--- a/drivers/gpu/drm/vkms/vkms_plane.c
+++ b/drivers/gpu/drm/vkms/vkms_plane.c
@@ -35,9 +35,13 @@ static const u32 vkms_formats[] = {
DRM_FORMAT_NV21,
DRM_FORMAT_NV61,
DRM_FORMAT_NV42,
+ DRM_FORMAT_YUV410,
+ DRM_FORMAT_YUV411,
DRM_FORMAT_YUV420,
DRM_FORMAT_YUV422,
DRM_FORMAT_YUV444,
+ DRM_FORMAT_YVU410,
+ DRM_FORMAT_YVU411,
DRM_FORMAT_YVU420,
DRM_FORMAT_YVU422,
DRM_FORMAT_YVU444,
--
2.47.3